/* roulang page: index */
/* ----- 设计变量与重置 ----- */
    :root {
      --primary: #7C3AED;
      --primary-light: #A855F7;
      --accent: #F59E0B;
      --accent-dark: #D97706;
      --bg-warm: #F5F1EB;
      --card-bg: #FFFAF5;
      --text-primary: #2D2A26;
      --text-secondary: #6B6560;
      --text-on-primary: #FFFFFF;
      --border-light: #E8E2D9;
      --shadow-card: 0 4px 20px rgba(124, 58, 237, 0.08);
      --shadow-hover: 0 12px 32px rgba(124, 58, 237, 0.15);
      --radius-card: 20px;
      --radius-btn: 30px;
      --radius-pill: 40px;
      --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-primary);
      line-height: 1.8;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: color 0.2s ease;
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
    }

    button, .button {
      cursor: pointer;
      font-family: var(--font-sans);
      transition: all 0.25s ease;
      border: none;
      outline: none;
      background: transparent;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* ----- 悬浮胶囊导航 ----- */
    .capsule-nav {
      position: fixed;
      top: 24px;
      left: 50%;
      transform: translateX(-50%);
      background: rgba(245, 241, 235, 0.88);
      backdrop-filter: blur(14px);
      border-radius: var(--radius-pill);
      padding: 10px 28px;
      display: flex;
      align-items: center;
      gap: 32px;
      z-index: 99;
      box-shadow: 0 10px 28px rgba(124, 58, 237, 0.10);
      border: 1px solid rgba(124, 58, 237, 0.10);
      width: fit-content;
      white-space: nowrap;
    }

    .nav-logo {
      font-weight: 700;
      font-size: 1.3rem;
      color: var(--primary);
      letter-spacing: -0.3px;
      margin-right: 8px;
      background: linear-gradient(135deg, #7C3AED, #A855F7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .nav-links {
      display: flex;
      gap: 24px;
      align-items: center;
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-primary);
    }

    .nav-links a {
      color: var(--text-primary);
      position: relative;
      padding: 4px 0;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--primary);
      transition: width 0.25s;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    /* 移动端底部导航 */
    .mobile-bottom-nav {
      display: none;
    }

    /* Hero 区域 */
    .hero-section {
      padding: 120px 0 80px;
      background: linear-gradient(135deg, #7C3AED 0%, #A855F7 45%, #F59E0B 100%);
      color: white;
      position: relative;
      overflow: hidden;
      min-height: 85vh;
      display: flex;
      align-items: center;
    }

    .hero-bg-img {
      position: absolute;
      right: -20px;
      top: 0;
      width: 55%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.25;
      mix-blend-mode: soft-light;
      border-radius: 120px 0 0 120px;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-title {
      font-size: 3.4rem;
      font-weight: 700;
      line-height: 1.2;
      letter-spacing: -0.6px;
      margin-bottom: 1.2rem;
      color: white;
      text-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }

    .hero-sub {
      font-size: 1.25rem;
      opacity: 0.92;
      margin-bottom: 2.2rem;
      max-width: 540px;
    }

    .btn-group {
      display: flex;
      gap: 18px;
      flex-wrap: wrap;
      align-items: center;
    }

    .btn-primary-gold {
      background: linear-gradient(135deg, #F59E0B, #D97706);
      color: #2D2A26;
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 14px 34px;
      box-shadow: 0 8px 18px rgba(245, 158, 11, 0.35);
      letter-spacing: 0.3px;
    }

    .btn-primary-gold:hover {
      background: linear-gradient(135deg, #FBBF24, #F59E0B);
      box-shadow: 0 12px 24px rgba(245, 158, 11, 0.45);
      transform: translateY(-2px);
      color: #1f1a14;
    }

    .btn-outline-light {
      border: 1.5px solid rgba(255,255,255,0.7);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 30px;
      font-weight: 500;
      background: rgba(255,255,255,0.08);
    }

    .btn-outline-light:hover {
      background: rgba(255,255,255,0.2);
      border-color: white;
    }

    /* 通用板块 */
    .section-padding {
      padding: 80px 0;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 600;
      letter-spacing: -0.3px;
      margin-bottom: 1rem;
      color: var(--text-primary);
    }

    .section-lead {
      font-size: 1.1rem;
      color: var(--text-secondary);
      max-width: 640px;
      margin-bottom: 3rem;
    }

    /* 卡片系统 */
    .custom-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 32px 28px;
      box-shadow: var(--shadow-card);
      transition: all 0.3s ease;
      height: 100%;
      border: 1px solid rgba(124, 58, 237, 0.05);
    }

    .custom-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-6px);
      background: #fffcf7;
    }

    .card-img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      border-radius: 16px;
      margin-bottom: 20px;
      background: #EDE4F5;
    }

    .tag {
      background: #EDE4F5;
      color: #7C3AED;
      padding: 4px 12px;
      border-radius: 18px;
      font-size: 0.8rem;
      font-weight: 500;
      display: inline-block;
      margin-right: 6px;
      margin-bottom: 8px;
    }

    .data-badge {
      background: var(--accent);
      color: #2D2A26;
      font-size: 3.2rem;
      font-weight: 700;
      padding: 28px 18px;
      border-radius: 28px;
      text-align: center;
    }

    .testimonial-card {
      background: var(--card-bg);
      border-radius: 28px;
      padding: 32px;
    }

    /* FAQ 手风琴 */
    .accordion-title {
      font-weight: 600;
      color: var(--text-primary);
      background: #FFFAF5;
      border-radius: 14px;
      padding: 16px 20px;
      border: 1px solid var(--border-light);
    }

    .accordion-title:hover {
      background: #F5F1EB;
    }

    .accordion-content {
      background: #F5F1EB;
      border-radius: 0 0 14px 14px;
      padding: 12px 20px 20px;
    }

    /* CTA 终极块 */
    .cta-block {
      background: linear-gradient(120deg, #7C3AED, #4C1D95);
      border-radius: 36px;
      padding: 60px 40px;
      color: white;
      text-align: center;
    }

    .footer-dark {
      background: #2D2A26;
      color: #9E958C;
      padding: 60px 0 30px;
      font-size: 0.95rem;
    }

    .footer-dark a {
      color: #D1C9C0;
    }

    .footer-dark a:hover {
      color: #F59E0B;
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .capsule-nav {
        gap: 20px;
        padding: 8px 20px;
      }
      .nav-links {
        gap: 16px;
        font-size: 0.85rem;
      }
    }

    @media (max-width: 768px) {
      .capsule-nav {
        display: none;
      }

      .mobile-bottom-nav {
        display: flex;
        position: fixed;
        bottom: 16px;
        left: 20px;
        right: 20px;
        background: rgba(45, 42, 38, 0.92);
        backdrop-filter: blur(20px);
        border-radius: 40px;
        padding: 10px 20px;
        justify-content: space-around;
        z-index: 100;
        box-shadow: 0 10px 25px rgba(0,0,0,0.3);
      }

      .mobile-bottom-nav a {
        color: #cfc4b8;
        font-size: 0.85rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
      }

      .hero-title {
        font-size: 2.2rem;
      }

      .hero-bg-img {
        width: 100%;
        right: 0;
        opacity: 0.15;
      }

      .section-title {
        font-size: 1.9rem;
      }
    }

    @media (max-width: 520px) {
      .hero-title {
        font-size: 1.9rem;
      }
    }